The Big Gun Turret was similar to the XX-9 heavy turbolaser and the XX-10 turbolaser tower. However, it featured a much larger base, allowing it to target starfighters over top of the buildings on Gerrard V. It also had a much thicker armor than the XX-9 Turbolasers, and a larger field of view, allowing it to hit targets closer to the ground. It fired in volleys as opposed to steadily like typical turbo-lasers.